Smartly Prepare Exam with Free Online JSE-40-01 Practice Test

We offer the latest JSE-40-01 practice test designed for free and effective online JSE Certified Entry-Level JavaScript Programmer certification preparation. It's a simulation of the real JSE-40-01 exam experience, built to help you understand the structure, complexity, and topics you'll face on exam day.

Question 1

Analyze the code snippet:

let n = 5 + 2 ** 2 * 3;

The result stored in the variable n is:

Options :

A : 42

B : 117649

C : 84

D : 17

Answer: D

Question 2

We want to declare a protocol constant and initialize it with the value "http"

What should such a declaration look like?

Options :

A :

let const protocol = "http";

B :

let protocol; const protocol = "http";

C :

const protocol; protocol = "http";

D :

const protocol = "http";

Answer: D

Question 3

Analyze the following code:

let x = 10;

function test() {

let x = 20;

}

test();

console.log(x);

What will be displayed in the console as a result of its execution?

Options :

A : 10

B :

undefined

C : Nothing will show up.

D : "x"

Answer: A

Question 4

What does shadowing mean?

Options :

A : Declaring a local variable with the same name

as the previously declared global variable.

B : Declaring a global variable with the same name

as a previously declared global variable.

C : Deleting and rewriting a selected piece of program code.

D : Changing the value of a variable.

Answer: A

Question 5

Which of the following is not a loop instruction in JavaScript?

Options :

A : for ... of

B : for ... in

C : do ... while

D : if ... else

Answer: D